Nord SK 1SI75 – 140TC – 90SH/4

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Power: 1.5 hp
Output Speed: 29 – 348 rpm
Output Torque:  253 – 2089 lb-in
Weight: 53 lb

The FLEXBLOC™ (SI Series) is a compact universal worm gear housing offering exceptional modularity and adaptability to any mounting position. Accessory kits
that are easily assembled by NORD or the customer help to provide maximum flexibility and various mounting possibilities.

CATALOG & MANUALS

 
Catalog Nord Flexbloc Catalog
Users Manual Nord Flexbloc Users Manual
Dimensions Nord Flexbloc Dimensions
Order Form Nord Flexbloc Order Form

Gearbox Selection

Below are some guideline steps to help aid in
the gear unit selection.
1. Determine the speed and/or gear ratio (see order form)
2. Determine the required power or torque (see order form)
3. Determine Service Factor
4. Select the basic gearbox type and input
5. Determine the required mounting position
6. Select options
7. Checks – overhung load, thrust load, NEMA motor weight, thermal considerations, and other application considerations

Size Offering

Gearbox Unit SK 1SIxx / SK 1SMIxx ( xx =mm, center distance )
Center Distance 31 mm 40 mm 50 mm 63 mm 75 mm
  1.2 inch 1.6 inch 2.0 inch 2.5 inch 3.0 inch

Mounting Positions

Gearbox Options

SK 1SI__ FLEXBLOC™ worm
(Universal foot and flange-mount housing)
- Keyed hollow-bore (standard)
V Plug-in solid shaft (single-side)
L Plug-in solid shaft (both sides)
F Flange-kit (B5), keyed-hollow bore
VF Flange-kit (B5), long plug-in shaft (single-side)
Flange Kit
Options
F or VF Units		 Circular flange-kit (B5), male pilot [I]
Square flange-kit (B5), female pilot [II]
Square flange-kit (B5), male pilot [III]
Circular flange-kit (B5), male pilot [IV]
D Torque-arm (for shaft mounting gear unit)
H Shaft cover
X Foot-plate kit
J Bushing kit
(to reduce standard inch hollow-bores)
B* Fixing Kit
N48C NEMA 48C Motor Adapter
N56C NEMA 56C Motor Adapter
N140TC NEMA 140TC Motor Adapter
N180TC NEMA 180TC Motor Adapter
IEC56 IEC56 Motor Adapter
IEC63 IEC63 Motor Adapter
IEC71 IEC71 Motor Adapter
IEC80 IEC80 Motor Adapter
IEC90 Special Solid Shaft
IEC100 IEC100 Motor Adapter
IEC112 IEC112 Motor Adapter
W Solid Input Shaft Adapter
SK 1SI__/H10 10:1 helical input
SK 1SI__/31 Compound-worm
(Double-worm adapter kit)
SK 1SI__/40 Compound-worm
(Double-worm adapter kit)
Vent Reducer breather kit (optional)
Paint Paint options (upon request)
NSD-Tuph Sealed surface conversion
Long Term Storage Long term storage preperation